At the beginning

Whether you are a college student or a professional, this article ends with the skills a senior architect must have

1. We face serious challenges every day of our lives

Although it seems that we are all doing our own things and everything is going smoothly at present, in fact, it is not true. Each of us is already full of “crisis” around us or ourselves. The crisis here refers to the substitutability of our own values.

No matter what you do, the most important thing is to be irreplaceable. So what explains this? If you think about it, it’s not hard. Technically speaking, your personal skill depth is an advantage early on in your career. If you can be technically superior in the first three years, and have a depth that is more than your peers, then you have an advantage, and that gives you a lot of advantages and resources.

On the other hand, if you’re not at the top, you’re going to have a much bigger challenge, and it’s going to be very challenging for you to grow.

From the examples AROUND me, many developers have three problems:

  1. The process for performance optimization is not very clear. Initially as a suspected bottleneck point, it excitedly started to talk about chi chi, and finally solved the problem is actually a shallow level of performance bottleneck, the root of the real problem has not been touched;
  2. The analysis of performance bottlenecks is not very clear. UI, network, memory…… With so many performance metrics, what should I focus on and where should I start?
  3. No knowledge of performance tuning tools. When you encounter a problem, you don’t know which tool to use and what the metrics from the tool represent.

Performance optimization is also a topic that is often asked during interviews in large factories, which is used to test whether there is practical experience in online problem solving. Such as:

  1. Is there any other way to optimize UI than in the layout?
  2. Is there any other way to start an optimization other than using an asynchronous thread to load part of the resource in the onCreate method of the application?
  3. Why does the JVM set up the tag and recycle algorithm, and not tag and recycle at the same time? Why is that?
  4. Can you see how this optimization can be applied to your own projects through the JVM’s tag collection algorithm
  5. What is the nature of performance tuning? Please explain your understanding!

conclusion

Finally, in order to help you understand the principle of Android related knowledge and interview related knowledge, here are 24 sets of interview questions from Tencent, Bytedance, Alibaba and Baidu that I collected and sorted out. I sorted out the technical points into videos and PDF (actually much more effort than expected). Package knowledge context + many details.

There are advanced architecture technology advanced brain map, Android development interview materials to help you learn to improve the progress, but also save you on the Internet to search for information time to learn, can also share with friends around to learn together.

Click:Android Architecture video +BAT Interview topics PDF+ Study notes”

Free access to ~

There is a lot of information about Learning Android online, but if the knowledge learned is not systematic, and problems are only tasted, no further research, then it is difficult to achieve real technology improvement. I hope this systematic technical system has a direction reference for everyone.

2021 May be a bumpy year for Android, but don’t panic. Make your own plans and learn your own lessons. Competition is everywhere, in every industry. Believe in yourself, there is nothing impossible, only unexpected. I wish you all the best in 2021.